EP2112848B1 - Procédé pour acheminer une porteur via une commutation de circuit vers un noeud de système multimédia du protocole Internet utilisant un en-tête de contact de protocole d'ouverture de session - Google Patents
Procédé pour acheminer une porteur via une commutation de circuit vers un noeud de système multimédia du protocole Internet utilisant un en-tête de contact de protocole d'ouverture de session Download PDFInfo
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- EP2112848B1 EP2112848B1 EP08166162A EP08166162A EP2112848B1 EP 2112848 B1 EP2112848 B1 EP 2112848B1 EP 08166162 A EP08166162 A EP 08166162A EP 08166162 A EP08166162 A EP 08166162A EP 2112848 B1 EP2112848 B1 EP 2112848B1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
- H04L65/1095—Inter-network session transfer or sharing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
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- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/08—Upper layer protocols
- H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
Definitions
- Advanced communication devices are capable of seamlessly operating in a packet-switched (PS) internet protocol (IP) network domain as well as in a circuit-switched (CS) cellular network domain.
- PS packet-switched
- IP internet protocol
- CS circuit-switched
- 3GPP third generation partnership project
- IMS IP multimedia subsystem
- UE user equipment
- 3GPP "3rc Generation Partnership Project; Technical Specification Group Services and System Asp: IP Multimedia Subsystem (IMS) Centralized Services; Stage 2(Release 8)" 3GPP DRAFT; 23.292 V040 CLEAN, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE : 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, [Online] vol. tsg_sa ⁇ WG2_Arch ⁇ TSGS2_65_Prague ⁇ Docs, no. Prague; 20080512, 24 April 2008 (2008-04-24), pages 1-69 relates to this area of technology.
- US patent application publication no. US2005058125 describes a mechanism for providing a connection from an IP-based network to a circuit-switched network, such as a GSM network.
- a temporary routing number for the circuit-switched network such as an E.164 number, is delivered to a user terminal, and a circuit-switched call leg is established from the user terminal to the IP-based network using the routing number.
- IMS-services are provided for end users which are located in the radio access network not having sufficient QoS required for voice over IP.
- a request for a conference call may forwarded via a data channel or data path to an application server which provides that conference call service.
- the application server selects a conference routing number and returns the routing number to the conference host terminal via the data channel.
- the conference host terminal can then set up a circuit-switched connection as a call leg of the conference call.
- US patent application publication no. US2007274289 describes methods and apparatus for originating a Session Initiation Protocol (SIP) call from a user equipment (UE) device in a network environment including a circuit-switched (CS) network and IP multimedia subsystem (IMS) network to a called party.
- SIP Session Initiation Protocol
- UE user equipment
- IMS IP multimedia subsystem
- a SIP Invite message which includes a SIP Uniform Resource Indicator (URI) or Tel URI of the called party is sent from the UE device to the IMS network (e.g. to an application server (AS) node).
- URI Uniform Resource Indicator
- AS application server
- a pool of E.164 numbers are maintained as IP multimedia routing numbers (IMRNs) which are utilized for mapping to or otherwise associating with called party URIs.
- IMRNs IP multimedia routing numbers
- the AS node dynamically allocates a select E.164 number with respect to the called party's URI received from the UE device, and returns it to the UE device in a SIP 380 (Alternative Service) Response message.
- the dynamically-allocated E.164 number is sent from the UE device in a call setup message for identification of the URI at the AS node, via the mapping, so that the SIP call may be properly routed towards the called party
- US patent application publication no. US2008080480 describes, in one embodiment, a scheme for managing call continuity in a network environment including a circuit-switched (CS) network and an IP multimedia subsystem (IMS) network wherein a SIP Invite message having a Domain Transfer-URI contained in the Request-URI that is operable to trigger a return of a routable number is utilized.
- CS circuit-switched
- IMS IP multimedia subsystem
- a network node Responsive to the SIP Invite message from a UE device, a network node provides a SIP response message (e.g., SIP 380 (Alternative Service) Response) which includes one or more radio access technologies and an alternative domain available to the UE device for continuing a call from one domain to another domain.
- SIP response message e.g., SIP 380 (Alternative Service) Response
- FIG. 1 illustrates a communication system according to an embodiment of the disclosure.
- FIG. 2 illustrates a message sequence according to an embodiment of the disclosure.
- FIG. 3 is a flow chart of a method according to an embodiment of the disclosure.
- FIG. 4 is a flow chart of another method according to an embodiment of the disclosure.
- FIG. 5 is an illustration of a user equipment (UE) according to an embodiment of the disclosure.
- FIG. 6 is a block diagram of a UE according to an embodiment of the disclosure.
- FIG. 7 is a block diagram of a software architecture of a UE according to an embodiment of the disclosure.
- FIG. 8 illustrates an exemplary general purpose computer system suitable for implementing some aspects of the several embodiments of the disclosure.
- the system 100 comprises a first user equipment (UE) 102, a second UE 104, a call session control function (CSCF) 106, a network node 108, a mobile switching center (MSC) 110, a media gateway control function (MGCF) 112, communicating via a network 114.
- the system 100 provides for communication between the first UE 102 and the second UE 104.
- a call may be set-up between the first UE 102 and the second UE 104 using first said protocol such as but not limited to internet protocol multimedia subsystem (IMS) signaling over a PS network, but a second said network such as but limited to CS network may be used to carry the bearer traffic, for example speech.
- IMS internet protocol multimedia subsystem
- IMS features including but not limited to IMS centralized services (CS), IMS service continuity (SC), and IMS voice call continuity (VCC), may be set-up in this manner.
- the 2 nd said protocol such as but not limited to circuit switching signaling should be routed to the correct application server, for example the network node 108, in the IMS network.
- the present disclosure teaches using a SIP informational response message contact header to carry the dynamic routing number to the originating UE.
- SIP headers such as but not limited to SIP header portions such as Record-Route, and Via as shown and described herein, can also contain SIP / TEL URIs and these could be used as well to transport this digit string.
- the SIP 183 session progress message may be used to carry the dynamic routing number in a contact header, but in other embodiments other SIP response messages may carry the dynamic routing number in their contact header or other SIP headers such as but not limited to SIP header portions such as Record-Route, and Via as shown and described herein.
- SIP informational response messages may be referred to as SIP 1XX messages.
- a reason or explanation why the dynamic routing number is provided may also be included in the SIP header, e.g. in the contact header.
- the dynamic routing number may be hashed, for example with a dialog identifier, and the hash carried by the e.g. contact header or other header of the SIP response message.
- the dialog identifier may be composed as the combination of multiple fields or tags of the SIP messages exchanged in a SIP message session or SIP dialog, for example the combination of a SIP Call-ID header field, a SIP From header tag field, and a SIP To header tag field.
- the first and second UE 102, 104 may be any of a variety of communications terminals including mobile phones and SIP-enabled phones.
- the UEs 102, 104 may be embodied in a wide variety of electronic devices including mobile phones, personal digital assistants, laptop computers, desktop computers, tablet computers, desk phones, and others.
- the UE 102, 104 may be embodied in a handset. An embodiment of a handset is described in greater detail hereinafter.
- the UE 102, 104 may be embodied substantially in the form of a general purpose computer system. General purpose computer systems are discussed in greater detail hereinafter.
- the CSCF 106 is an IMS element that may execute on a general purpose computer system.
- the CSCF 106 provides a contact point within an operator's network that promotes subscribers of the operator to register.
- the CSCF 106 may handle registration, routing, and forwarding of SIP messages and charging.
- the CSCF 106 may be an interrogating CSCF (I-CSCF) and/or a serving CSCF (S-CSCF).
- the MGCF 112 is a component in the IMS that communicates with the call session control function (CSCF) and controls the connections for media channels in an IMS-MGW.
- the MGCF 112 performs protocol conversion between ISDN User Part (ISUP) and the IMS call-control protocols.
- ISUP ISDN User Part
- the MSC 110 provides circuit switching services to a wireless radio access network, for example to one or both of the UEs 102, 104 via a base transceiver station (BTS) (not shown).
- BTS base transceiver station
- the MSC 110 links the radio access network to the network 114.
- the first UE 102 sends a SIP INVITE message 152 containing a uniform resource identifier (URI) associated with the second UE 104 to the CSCF 106.
- the CSCF 106 forwards a SIP INVITE message 154 containing the URI associated with the second UE 104 to the network node 108.
- the network node 108 may be an IMS application server (AS).
- the SIP INVITE messages 152, 154 may take forms such as illustrated in the two following examples:
- the network node 108 looks up one of an E.164 phone number and a private number plan (PNP) phone number to associate with the URI associated with the second UE 104.
- the E.164 number could be generated by a variety of means such as dynamically or some algorithm.
- the number generated is stored and associated with the URI, and then the network node 108 returns the E.164 or PNP number as information in e.g. contact header or other header of a SIP response message, for example in a SIP 183 message 156.
- the number may be formatted in a variety of ways in the e.g. contact header or other header of the SIP 1 XX message or other response message.
- the number may be included in the contact header as a human readable digit string.
- the number may be included in the contact header as a hash value that is produced by hashing the number with the digital identifier of the SIP session associated with the SIP INVITE message 152.
- the information may also include text or coded information identifying a reason for why the number information is included in the contact header of the SIP 1 XX message. Some of the reasons may include IMS centralized services (CS) origination, IMS CS termination, and voice call continuity (VCC) invocation.
- CS IMS centralized services
- VCC voice call continuity
- Example 6 Contact: ⁇ sip:55555555
- the network node 108 sends the SIP 183 message 156 containing the information to the CSCF 106.
- the CSCF 106 sends a SIP 183 message 158 containing the information to the first UE 102.
- the first UE 102 analyzes the SIP 183 message 158 to determine the number associated with the second UE 104.
- the number associated with the second UE 104 may be an E.164 number or the number may be a PNP number, for example when the first UE 102 and the second UE 104 are inside the same private phone network.
- the first UE 102 sends a call set-up message 160 containing the number to the MSC 110.
- the MSC 110 sends an integrated services digital network user part (ISUP) initial address message (IAM) 162 containing the number to the MGCF 112.
- IAM integrated services digital network user part
- the call set-up message 160 and the IAM 162 may be sent over a CS network.
- the MGCF 112 sends a SIP INVITE message 164 containing the number to the CSCF 106.
- the CSCF 106 sends a SIP INVITE message 166 containing the number to the network node 108.
- the network node 108 uses the number to associate the SIP INVITE message 166 with the earlier SIP INVITE message 154. Note that the SIP INVITE message 154 and the SIP INVITE message 166 belong to different SIP sessions or dialogs.
- the network node 108 completes call set-up with the second UE 104.
- message 170 the first UE 102 and the second UE 104 are shown in full duplex communication.
- the communication path between the first UE 102 and the second UE 104 may involve both a CS network path component and a PS network path component, for example when the first UE 102 is a mobile device and accesses the PS network via the radio access network and the MSC 110.
- a feature tag can also be in the Contact Header such that the SIP UA is aware that the received contact is to be used for MT session but the wireless device is to use the CS domain from the bearer.
- a feature tag in the contact could be e.g. "+g.ims.ics”.
- the feature tag (“g.ims.ics") can also be used in an Accept-Contact header to route to a UE that supports ICS in cases where multiple UEs are registered with the same public user identity and not all the UEs support ICS.
- the mechanisms in RFC 3840 and RFC 3841 are used by the UE to register the feature tag upon SIP registration and by the CSCF to route the request to the ICS supporting UE.
- a method 200 is described.
- a SIP INVITE message having the URI of the called party is received.
- either an E.164 or a PNP number associated with the URI is determined, for example by looking up in a database or via a remote procedure call to an appropriate server or generating dynamically.
- a SIP response message for example a SIP 183 message or other SIP 1 XX message, is sent or transmitted containing the number looked up in block 208.
- the number is included as information in a contact header or another header of the SIP informational message.
- the information may also include a reason text or a reason code identifying a purpose associated with using the number.
- the information may also encode one of an IMS CS origination reason, an IMS CS termination reason, a VCC invocation reason, or another reason.
- the number may be hashed with a dialog identifier.
- a call set-up is completed using the number.
- a method 250 is discussed.
- a SIP INVITE message containing the URI of a called party is sent.
- a SIP informational message for example a SIP 183 message, is received having a contact header containing information related to an E.164 or a PNP number associated with the called party.
- the contact header of the SIP response message is analyzed to determine the E.164 or the PNP number associated with the called party. If the SIP response message contact header or other header contains a SIP URI with user tag or user parameter having a value of phone and the SIP URI user name is in the format of a number string, then a domain part, including but not limited to, the contact header, Via, Record-Route, etc., is also analyzed to identify a possible reason code or reason text.
- a reason text may be provided in various formats, including, but not limited to, the following examples: CS origination
- the digit string is for the purpose only for when a bearer needs to set-up over CS for MO origination CS termination
- the digit string is for the purpose only for when a bearer needs to set-up over CS when a MT origination has been received and the SIP UA needs to perform an MO operation to retrieve it VCC invocation VCC needs to be invoked and the bearer is being transferred into the CS domain
- These textual representations could equally be numerical representations.
- use could be made of the 3GPP defined ICSI or IARI feature tags, as per technical specification 24.229.
- a feature tag (ICSI, IARI) could also be used in the Contact header to indicate the VCC, CSI, ICS application.
- the telephone number is to be used to originate a circuit switched bearer.
- the contact header is examined to determine if a gr parameter or gr tag is present.
- the E.164 or PNP number is included in a Contact header parameter (e.g a +g.ims.ics.routing-num feature tag). If a Contact header parameter (e.g +g.ims.ics.routing-num feature tag) is present and contains a telephone number it may be assumed that the telephone number is to be used to originate a circuit switched bearer.
- the gr parameter is a known SIP URI parameter that can be included in a URI (known as a GRUU) in the contact header. If the gr tag is present and contains a telephone number or a URN (e.g. urn: tel) that represents a telephone number, it may be assumed that the telephone number is to be used to originate a circuit switched bearer. If a tel:URI is received in the Contact header, it may be assumed that the telephone number is to be used to originate a circuit switched bearer. As is known to one skilled in the art, the urn:tel: is only a portion of the URN. At block 264 a bearer for the call is set-up at least partly over a circuit switched network based on the E.164 or the PNP number associated with the called party.
- a bearer for the call is set-up at least partly over a circuit switched network based on the E.164 or the PNP number associated with the called party.
- FIG. 5 illustrates a handset 400, which could be a UE, for example the first or the second UE 102, 104, in communication with a wireless communications system.
- FIG. 5 depicts the handset 400, which is operable for implementing aspects of the present disclosure, but the present disclosure should not be limited to these implementations.
- the handset 400 may take various forms including a wireless handset, a pager, a personal digital assistant (PDA), a portable computer, a tablet computer, or a laptop computer. Many suitable handsets combine some or all of these functions.
- PDA personal digital assistant
- the handset 400 is not a general purpose computing device like a portable, laptop or tablet computer, but rather is a special-purpose communications device such as a mobile phone, wireless handset, pager, or PDA.
- the handset 400 may support specialized activities such as gaming, inventory control, job control, and/or task management functions, and so on.
- the handset 400 includes a display 402 and a touch-sensitive surface or keys 404 for input by a user.
- the handset 400 may present options for the user to select, controls for the user to actuate, and/or cursors or other indicators for the user to direct.
- the handset 400 may further accept data entry from the user, including numbers to dial or various parameter values for configuring the operation of the handset.
- the handset 400 may further execute one or more software or firmware applications in response to user commands. These applications may configure the handset 400 to perform various customized functions in response to user interaction. Additionally, the handset 400 may be programmed and/or configured over-the-air, for example from a wireless base station, a wireless access point, or a peer handset 400.
- the handset 400 may execute a web browser application which enables the display 402 to show a web page.
- the web page may be obtained via wireless communications with a cell tower 406, a wireless network access node, a peer handset 400 or any other wireless communication network or system.
- the cell tower 406 (or wireless network access node) is coupled to a wired network 408, such as the Internet.
- the handset 400 Via the wireless link and the wired network, the handset 400 has access to information on various servers, such as a server 410.
- the server 410 may provide content that may be shown on the display 402. Alternately, the handset 400 may access the cell tower 406 through a peer handset 400 acting as an intermediary, in a relay type or hop type of connection.
- FIG. 6 shows a block diagram of the handset 400. While a variety of known components of handsets 102 are depicted, in an embodiment a subset of the listed components and/or additional components not listed may be included in the handset 400.
- the handset 400 includes a digital signal processor (DSP) 502 and a memory 504.
- DSP digital signal processor
- the handset 400 may further include an antenna and front end unit 506, a radio frequency (RF) transceiver 508, an analog baseband processing unit 510, a microphone 512, an earpiece speaker 514, a headset port 516, an input/output interface 518, a removable memory card 520, a universal serial bus (USB) port 522, an infrared port 524, a vibrator 526, a keypad 528, a touch screen liquid crystal display (LCD) with a touch sensitive surface 530, a touch screen/LCD controller 532, a charge-coupled device (CCD) camera 534, a camera controller 536, and a global positioning system (GPS) sensor 538.
- the handset 400 may include another kind of display that does not provide a touch sensitive screen.
- the DSP 502 may communicate directly with the memory 504 without passing through the input/output interface 518.
- the DSP 502 or some other form of controller or central processing unit operates to control the various components of the handset 400 in accordance with embedded software or firmware stored in memory 504 or stored in memory contained within the DSP 502 itself.
- the DSP 502 may execute other applications stored in the memory 504 or made available via information carrier media such as portable data storage media like the removable memory card 520 or via wired or wireless network communications.
- the application software may comprise a compiled set of machine-readable instructions that configure the DSP 502 to provide the desired functionality, or the application software may be high-level software instructions to be processed by an interpreter or compiler to indirectly configure the DSP 502.
- the antenna and front end unit 506 may be provided to convert between wireless signals and electrical signals, enabling the handset 400 to send and receive information from a cellular network or some other available wireless communications network or from a peer handset 400.
- the antenna and front end unit 506 may include multiple antennas to support beam forming and/or multiple input multiple output (MIMO) operations.
- MIMO operations may provide spatial diversity which can be used to overcome difficult channel conditions and/or increase channel throughput.
- the antenna and front end unit 506 may include antenna tuning and/or impedance matching components, RF power amplifiers, and/or low noise amplifiers.
- the RF transceiver 508 provides frequency shifting, converting received RF signals to baseband and converting baseband transmit signals to RF.
- a radio transceiver or RF transceiver may be understood to include other signal processing functionality such as modulation/demodulation, coding/decoding, interleaving/deinterleaving, spreading/despreading, inverse fast fourier transforming (IFFT)/fast fourier transforming (FFT), cyclic prefix appending/removal, and other signal processing functions.
- IFFT inverse fast fourier transforming
- FFT fast fourier transforming
- cyclic prefix appending/removal and other signal processing functions.
- the description here separates the description of this signal processing from the RF and/or radio stage and conceptually allocates that signal processing to the analog baseband processing unit 510 and/or the DSP 502 or other central processing unit.
- the RF transceiver 408, portions of the antenna and front end 506, and the analog baseband processing unit 510 may be combined
- the analog baseband processing unit 510 may provide various analog processing of inputs and outputs, for example analog processing of inputs from the microphone 512 and the headset 516 and outputs to the earpiece 514 and the headset 516.
- the analog baseband processing unit 510 may have ports for connecting to the built-in microphone 512 and the earpiece speaker 514 that enable the handset 400 to be used as a cell phone.
- the analog baseband processing unit 510 may further include a port for connecting to a headset or other hands-free microphone and speaker configuration.
- the analog baseband processing unit 510 may provide digital-to-analog conversion in one signal direction and analog-to-digital conversion in the opposing signal direction.
- at least some of the functionality of the analog baseband processing unit 510 may be provided by digital processing components, for example by the DSP 502 or by other central processing units.
- the DSP 502 may perform modulation/demodulation, coding/decoding, interleaving/deinterleaving, spreading/despreading, inverse fast fourier transforming (IFFT)/fast fourier transforming (FFT), cyclic prefix appending/removal, and other signal processing functions associated with wireless communications.
- IFFT inverse fast fourier transforming
- FFT fast fourier transforming
- cyclic prefix appending/removal and other signal processing functions associated with wireless communications.
- CDMA code division multiple access
- the DSP 502 may perform modulation, coding, interleaving, inverse fast fourier transforming, and cyclic prefix appending, and for a receiver function the DSP 502 may perform cyclic prefix removal, fast fourier transforming, deinterleaving, decoding, and demodulation.
- OFDMA orthogonal frequency division multiplex access
- the DSP 502 may communicate with a wireless network via the analog baseband processing unit 510.
- the communication may provide Internet connectivity, enabling a user to gain access to content on the Internet and to send and receive e-mail or text messages.
- the input/output interface 518 interconnects the DSP 502 and various memories and interfaces.
- the memory 504 and the removable memory card 520 may provide software and data to configure the operation of the DSP 502.
- the interfaces may be the USB port 522 and the infrared port 524.
- the USB port 522 may enable the handset 400 to function as a peripheral device to exchange information with a personal computer or other computer system.
- the infrared port 524 and other optional ports such as a Bluetooth interface or an IEEE 802.11 compliant wireless interface may enable the handset 400 to communicate wirelessly with other nearby handsets and/or wireless base stations.
- the input/output interface 518 may further connect the DSP 502 to the vibrator 526 that, when triggered, causes the handset 400 to vibrate.
- the vibrator 526 may serve as a mechanism for silently alerting the user to any of various events such as an incoming call, a new text message, and an appointment reminder.
- the keypad 528 couples to the DSP 502 via the interface 518 to provide one mechanism for the user to make selections, enter information, and otherwise provide input to the handset 400.
- Another input mechanism may be the touch screen LCD 530, which may also display text and/or graphics to the user.
- the touch screen LCD controller 532 couples the DSP 502 to the touch screen LCD 530.
- the CCD camera 534 enables the handset 400 to take digital pictures.
- the DSP 502 communicates with the CCD camera 534 via the camera controller 536.
- the GPS sensor 538 is coupled to the DSP 502 to decode global positioning system signals, thereby enabling the handset 400 to determine its position.
- a camera operating according to a technology other than charge coupled device cameras may be employed.
- Various other peripherals may also be included to provide additional functions, e.g., radio and television reception.
- FIG. 7 illustrates a software environment 602 that may be implemented by the DSP 502.
- the DSP 502 executes operating system drivers 604 that provide a platform from which the rest of the software operates.
- the operating system drivers 604 provide drivers for the handset hardware with standardized interfaces that are accessible to application software.
- the operating system drivers 604 include application management services ("AMS") 606 that transfer control between applications running on the handset 400.
- AMS application management services
- FIG. 7 are also shown in FIG. 7 a web browser application 608, a media player application 610, and JAVA applets 612.
- the web browser application 608 configures the handset 400 to operate as a web browser, allowing a user to enter information into forms and select links to retrieve and view web pages.
- the media player application 610 configures the handset 400 to retrieve and play audio or audiovisual media.
- the JAVA applets 612 configure the handset 400 to provide games, utilities, and other functionality.
- FIG. 8 illustrates a typical, general-purpose computer system suitable for implementing one or more embodiments disclosed herein.
- the computer system 780 includes a processor 782 (which may be referred to as a central processor unit or CPU) that is in communication with memory devices including secondary storage 784, read only memory (ROM) 786, random access memory (RAM) 788, input/output (I/O) devices 790, and network connectivity devices 792.
- the processor may be implemented as one or more CPU chips.
- the secondary storage 784 is typically comprised of one or more disk drives or tape drives and is used for non-volatile storage of data and as an overflow data storage device if RAM 788 is not large enough to hold all working data. Secondary storage 784 may be used to store programs which are loaded into RAM 788 when such programs are selected for execution.
- the ROM 786 is used to store instructions and perhaps data which are read during program execution. ROM 786 is a non-volatile memory device which typically has a small memory capacity relative to the larger memory capacity of secondary storage.
- the RAM 788 is used to store volatile data and perhaps to store instructions. Access to both ROM 786 and RAM 788 is typically faster than to secondary storage 784.
- I/O devices 790 may include printers, video monitors, liquid crystal displays (LCDs), touch screen displays, keyboards, keypads, switches, dials, mice, track balls, voice recognizers, card readers, paper tape readers, or other well-known input devices.
- LCDs liquid crystal displays
- touch screen displays keyboards, keypads, switches, dials, mice, track balls, voice recognizers, card readers, paper tape readers, or other well-known input devices.
- the network connectivity devices 792 may take the form of modems, modem banks, ethernet cards, universal serial bus (USB) interface cards, serial interfaces, token ring cards, fiber distributed data interface (FDDI) cards, wireless local area network (WLAN) cards, radio transceiver cards such as code division multiple access (CDMA) and/or global system for mobile communications (GSM) radio transceiver cards, and other well-known network devices.
- These network connectivity devices 792 may enable the processor 782 to communicate with an Internet or one or more intranets. With such a network connection, it is contemplated that the processor 782 might receive information from the network, or might output information to the network in the course of performing the above-described method steps. Such information, which is often represented as a sequence of instructions to be executed using processor 782, may be received from and outputted to the network, for example, in the form of a computer data signal embodied in a carrier wave
- Such information may be received from and outputted to the network, for example, in the form of a computer data baseband signal or signal embodied in a carrier wave.
- the baseband signal or signal embodied in the carrier wave generated by the network connectivity devices 792 may propagate in or on the surface of electrical conductors, in coaxial cables, in waveguides, in optical media, for example optical fiber, or in the air or free space.
- the information contained in the baseband signal or signal embedded in the carrier wave may be ordered according to different sequences, as may be desirable for either processing or generating the information or transmitting or receiving the information.
- the baseband signal or signal embedded in the carrier wave, or other types of signals currently used or hereafter developed, referred to herein as the transmission medium may be generated according to several methods well known to one skilled in the art.
- the processor 782 executes instructions, codes, computer programs, scripts which it accesses from hard disk, floppy disk, optical disk (these various disk based systems may all be considered secondary storage 784), ROM 786, RAM 788, or the network connectivity devices 792. While only one processor 792 is shown, multiple processors may be present. Thus, while instructions may be discussed as executed by a processor, the instructions may be executed simultaneously, serially, or otherwise executed by one or multiple processors.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Telephonic Communication Services (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Claims (14)
- Procédé de routage d'appel par un serveur, comprenant les étapes consistant à :recevoir un message INVITE du protocole de lancement de session 'SIP' (254) qui contient un identificateur uniforme de ressource 'URI' d'une partie appelée et qui indique qu'un support de transmission pour un appel vers la partie appelée doit être établi au moins en partie sur un domaine à commutation de circuits (204) ;déterminer une chaîne de chiffres associée à l'URI ; etenvoyer un message de réponse SIP possédant un en-tête de contact SIP qui contient la chaîne de chiffres, l'en-tête de contact SIP fournissant une raison qui indique l'objectif de la fourniture de la chaîne de chiffres (212), la raison étant fournie dans une balise de fonctionnalité.
- Procédé selon la revendication 1, comprenant en outre les étapes consistant à :envoyer un message SIP à un réseau qui contient l'URI ;recevoir un message SIP INVITE qui contient la chaîne de chiffres ; etachever l'établissement de l'appel à l'aide de la chaîne de chiffres.
- Procédé selon la revendication 1 ou la revendication 2, dans lequel l'en-tête de contact SIP contient des informations fondées sur la chaîne de chiffres dans un paramètre 'gr' formaté comme un nom uniforme de ressource 'URN'.
- Procédé selon la revendication 1 ou la revendication 2, dans lequel l'en-tête de contact SIP contient la chaîne de chiffres et un champ d'utilisateur comprenant un paramètre de valeur "téléphone", dans lequel la raison est soit l'origine en provenance des serveurs centralisés 'CS' du sous-système multimédia sous protocole internet 'IMS', la terminaison par les CS IMS, ou l'invocation de la continuité d'appel vocal 'VCC' et dans lequel la balise de fonctionnalité est au moins soit une balise de fonctionnalité d'identification de service centralisé IMS (ICSI), soit une balise de fonctionnalité d'identification de référence d'application IMS (IARI).
- Procédé selon l'une quelconque des revendications précédentes, dans lequel l'en-tête de contact SIP inclut des informations comprenant un hachage soit d'un numéro E.164, soit d'un numéro du plan de numérotation privée 'PNP', le hachage étant fondé sur un identificateur de dialogue associé au message SIP INVITE et au message de réponse SIP et dans lequel le message de réponse SIP est un message SIP 183.
- Procédé d'établissement d'un support de transmission sur un réseau à commutation de circuits pour un équipement d'utilisateur, le procédé comprenant les étapes consistant à :envoyer un message INVITE du protocole de lancement de session 'SIP' qui contient un identificateur uniforme de ressource 'URI' d'une partie appelée et qui indique qu'un appel vers la partie appelée doit être établi au moins en partie sur un domaine à commutation de circuits (254) ;recevoir un message de réponse SIP intéressant le message SIP INVITE, le message de réponse SIP possédant un en-tête de contact SIP qui contient une chaîne de chiffres (258), l'en-tête de contact SIP fournissant une raison qui indique l'objectif de la fourniture de la chaîne de chiffres (258), la raison étant fournie dans une balise de fonctionnalité ;analyser l'en-tête de contact SIP du message de réponse SIP pour déterminer la séquence de chiffres (262) ; etétablir le support de transmission sur le réseau à commutation de circuits à l'aide de la séquence de chiffres (264).
- Procédé selon la revendication 6, dans lequel un champ d'utilisateur de l'en-tête de contact SIP comprend une valeur "téléphone" et un champ SIP URI de l'en-tête de contact SIP prend la forme de la chaîne de chiffres, dans lequel l'étape d'analyse comprend l'analyse de l'en-tête de contact SIP afin de déterminer des informations sur l'utilisation de la chaîne de chiffres et dans lequel, si un champ d'utilisateur de l'en-tête de contact SIP ne contient pas une valeur "téléphone", l'étape d'analyse comprend l'analyse d'un champ 'gr' de l'en-tête de contact SIP afin de déterminer la séquence de chiffres.
- Procédé selon la revendication 7, dans lequel les informations sur l'utilisation de la chaîne de chiffres sont soit l'origine en provenance des serveurs centralisés 'CS' du sous-système multimédia sous protocole internet 'IMS', la terminaison par les CS IMS, ou l'invocation de la continuité d'appel vocal 'VCC' et dans lequel la balise de fonctionnalité est au moins soit une balise de fonctionnalité d'identification de service centralisé IMS (ICSI), soit une balise de fonctionnalité d'identification de référence d'application IMS (IARI).
- Procédé selon l'une quelconque des revendications 6 à 9, dans lequel l'étape d'analyse de l'en-tête de contact SIP du message de réponse SIP pour déterminer la séquence de chiffres comprend l'analyse d'un champ SIP URI pour déterminer soit un numéro E.164, soit un numéro d'un plan de numérotation privée 'PNP' et dans lequel le message de réponse SIP est un message SIP 183.
- Équipement d'utilisateur 'UE', comprenant :un composant configuré pour :émettre un message INVITE du protocole de lancement de session 'SIP' qui contient un identificateur uniforme de ressource 'URI' d'une partie appelée et qui indique qu'un support de transmission pour un appel vers la partie appelée doit être établi au moins en partie sur un domaine à commutation de circuits (254) ;recevoir un message de réponse informatif SIP possédant un en-tête de contact SIP qui contient une chaîne de chiffres (258), l'en-tête de contact fournissant une raison qui indique l'objectif de la fourniture de la chaîne de chiffres (258), la raison étant fournie dans une balise de fonctionnalité ;analyser l'en-tête de contact pour déterminer soit un numéro E.164, soit un numéro d'un plan de numérotation privée 'PNP' (262) ; etémettre un message d'établissement d'appel contenant soit le numéro E.164, soit le numéro PNP (264) ;dans lequel l'équipement d'utilisateur est configuré pour établir un support de transmission sur le domaine à commutation de circuits (264).
- Équipement d'utilisateur selon la revendication 10, dans lequel l'en-tête de contact contient des informations fondées sur la chaîne de chiffres, dans lequel les informations fondées sur la chaîne de chiffres sont un hachage d'un identificateur de dialogue SIP et soit le numéro E.164, soit le numéro PNP, dans lequel l'en-tête de contact contient un domaine qui identifie une raison d'utiliser les informations fondées sur la chaîne de chiffres, la raison comprenant l'origine en provenance des serveurs centralisés 'CS' du sous-système multimédia sous protocole internet 'IMS', la terminaison par les CS IMS ou l'invocation de la continuité d'appel vocal 'VCC' et dans lequel la balise de fonctionnalité est au moins soit une balise de fonctionnalité d'identification de service centralisé IMS (ICSI), soit une balise de fonctionnalité d'identification de référence d'application IMS (IARI).
- Équipement d'utilisateur selon la revendication 10 ou la revendication 11, dans lequel les informations fondées sur la chaîne de chiffres sont soit le numéro E.164, soit le numéro PNP et dans lequel le numéro E.164 ou le numéro PNP est contenu soit dans un champ SIP URI de l'en-tête de contact, soit un paramètre 'gr' de l'en-tête de contact.
- Serveur comprenant :un composant configuré pour :recevoir un message INVITE du protocole de lancement de session 'SIP' qui contient un identificateur uniforme de ressource 'URI' d'une partie appelée et qui indique qu'un support de transmission pour un appel vers la partie appelée doit être établi au moins en partie sur un domaine à commutation de circuits (204) ;déterminer soit un numéro E.164, soit un numéro de plan de numérotation privée associé à l'URI (208) ;envoyer un message de réponse informatif SIP possédant un en-tête de contact SIP qui contient une chaîne de chiffres fondée soit sur le numéro E.164, soit sur le numéro PNP (212), l'en-tête de contact SIP fournissant une raison qui indique l'objectif de la chaîne de chiffres (258), la raison étant fournie dans une balise de fonctionnalité ;recevoir un message SIP INVITE qui contient la chaîne de chiffres fondée soit sur le numéro E.164, soit sur le numéro PNP (216) ; etachever l'établissement de l'appel à l'aide de la chaîne de chiffres fondée soit sur le numéro E.164, soit sur le numéro PNP (220).
- Support lisible par ordinateur portant du code lisible par ordinateur qui y est matérialisé afin d'être exécuté par un processeur d'un dispositif informatique afin de commander audit dispositif informatique de mettre en oeuvre les étapes du procédé selon l'une quelconque des revendications 1 à 9.
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US12/110,124 US8621084B2 (en) | 2008-04-25 | 2008-04-25 | Methods to route a bearer via circuit switching to an internet protocol multimedia system node using session initiation protocol contact header |
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EP08166162A Active EP2112848B1 (fr) | 2008-04-25 | 2008-10-08 | Procédé pour acheminer une porteur via une commutation de circuit vers un noeud de système multimédia du protocole Internet utilisant un en-tête de contact de protocole d'ouverture de session |
EP18203843.0A Active EP3457810B1 (fr) | 2008-04-25 | 2009-04-16 | Procédé pour acheminer une porteuse via une commutation de circuit vers un noeud de système multimédia du protocole internet utilisant un en-tête de contact de protocole d'ouverture de session |
EP09735231.4A Active EP2294890B1 (fr) | 2008-04-25 | 2009-04-16 | Procédés destinés à router un support par commutation de circuits vers un noeud de système multimédia à protocole internet à l'aide d'un en-tête de contact de protocole de lancement de session |
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EP18203843.0A Active EP3457810B1 (fr) | 2008-04-25 | 2009-04-16 | Procédé pour acheminer une porteuse via une commutation de circuit vers un noeud de système multimédia du protocole internet utilisant un en-tête de contact de protocole d'ouverture de session |
EP09735231.4A Active EP2294890B1 (fr) | 2008-04-25 | 2009-04-16 | Procédés destinés à router un support par commutation de circuits vers un noeud de système multimédia à protocole internet à l'aide d'un en-tête de contact de protocole de lancement de session |
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US8175628B2 (en) * | 2008-07-15 | 2012-05-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for reducing push-to-talk (PTT) latency in a WCDMA network |
US9184940B2 (en) * | 2008-12-12 | 2015-11-10 | At&T Intellectual Property I, L.P. | Method and apparatus for completing a circuit switched service call in an internet protocol network |
US8249058B2 (en) * | 2010-02-19 | 2012-08-21 | Spidercloud Wireless, Inc. | RAB triggering for multimedia calls |
EP3672186B1 (fr) * | 2018-12-21 | 2024-05-08 | Wone Sagl | Procédé et système pour initier un appel vocal mobile |
US11303754B1 (en) * | 2021-01-13 | 2022-04-12 | Verizon Patent And Licensing Inc. | Ringless voicemail attempt detection |
US11824904B1 (en) | 2022-11-18 | 2023-11-21 | T-Mobile Usa, Inc. | Verifying delivery of rich call data object to a terminating wireless device |
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DE10241202A1 (de) | 2002-09-05 | 2004-03-18 | Siemens Ag | Verfahren und Anordnungen zur Kommunikation zwischen einem leitungsvermittelten Kommunikationsnetz und mehreren VoIP-Netzwerkdomänen |
GB2398458B (en) * | 2003-02-15 | 2005-05-25 | Ericsson Telefon Ab L M | Conversational bearer negotiation |
US7898990B2 (en) | 2003-03-25 | 2011-03-01 | Spyder Navigations L.L.C. | Method, system and gateway device for enabling interworking between IP and CS networks |
US7885208B2 (en) | 2003-09-11 | 2011-02-08 | Nokia Corporation | IP-based services for circuit-switched networks |
US7359373B2 (en) | 2003-10-17 | 2008-04-15 | Nokia Corporation | System, apparatus, and method for establishing circuit-switched communications via packet-switched network signaling |
CN101292489B (zh) | 2005-08-22 | 2013-03-27 | 北方电讯网络有限公司 | 用于电路交换子系统呼叫的多媒体子系统业务控制 |
US7710950B2 (en) | 2006-02-06 | 2010-05-04 | Research In Motion Limited | System and methods for originating a SIP call via a circuit-switched network from a user equipment device |
US7995565B2 (en) | 2006-10-03 | 2011-08-09 | Research In Motion Limited | System and method for managing call continuity in IMS network environment using SIP messaging |
US7830868B2 (en) * | 2006-02-06 | 2010-11-09 | Research In Motion Limited | System and method for effecutating a SIP call in a network environment including IMS |
RU2405272C2 (ru) * | 2006-04-26 | 2010-11-27 | Самсунг Электроникс Ко., Лтд. | Способ и система пересылки информации функциональных возможностей пользовательского оборудования сети подсистемы мультимедиа интернет-протокола |
US7760712B2 (en) | 2006-08-11 | 2010-07-20 | Research In Motion Limited | System and method for managing call continuity in IMS network environment |
ATE518352T1 (de) * | 2006-10-03 | 2011-08-15 | Research In Motion Ltd | Verfahren und vorrichtungen zum steuern von call continuity in einer ims-netzwerkumgebung unter verwendung von sip-nachrichten |
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CA2722610C (fr) | 2014-09-30 |
CA2722610A1 (fr) | 2009-10-29 |
US8621084B2 (en) | 2013-12-31 |
EP2294890A4 (fr) | 2014-04-30 |
EP3457810B1 (fr) | 2021-06-02 |
EP2112848A1 (fr) | 2009-10-28 |
WO2009131899A3 (fr) | 2010-02-04 |
US20090268726A1 (en) | 2009-10-29 |
WO2009131899A2 (fr) | 2009-10-29 |
EP2294890B1 (fr) | 2018-12-26 |
EP3457810A1 (fr) | 2019-03-20 |
EP2294890A2 (fr) | 2011-03-16 |
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